A fixed dual-beam infrared hydrocarbon gas detector with intelligent heated optics, 4-second response, 5-year industry-leading warranty, and SIL2-capable functional safety — built to outperform in the high temperature and humidity conditions of the Alberta oilfield.

The Crowcon IR Plus is a fixed dual-beam infrared hydrocarbon gas detector engineered for dependable, fail-safe detection in the most demanding industrial environments. Purpose-built to detect methane, propane, and other hydrocarbons, the IR Plus uses intelligent heated optics combined with Stay-clIR hydrophobic mirror coating to maintain reliable performance where competing detectors fail — in high humidity, condensation, and extreme temperature conditions from -40°C to +70°C. With a T90 response time of just 4 seconds and ±2% FSD drift, repeatability, and linearity performance, the IR Plus delivers the accuracy and speed that safety-critical fixed gas detection demands. Multiple mounting configurations — wall, pipe, duct, and junction box — combined with display options ranging from no display to IS barrier with remote display up to 3m, make it adaptable to virtually any installation. Standard 4-20mA and RS-485 Modbus outputs integrate directly into existing control systems, with optional HART 7 for advanced diagnostics. A 5-year industry-leading warranty and SIL2-capable functional safety rating make the IR Plus a long-term, low-maintenance investment in fixed facility protection. Built from 316L stainless steel and rated IP66, it's ready for the harshest oilfield and processing facility environments.

Key Features and Benefits

• Dual-beam infrared detection — fail-safe, unaffected by sensor poisoning or oxygen depletion
• Intelligent heated optics with Stay-clIR hydrophobic mirror coating — reliable in high humidity and condensation
• 4-second T90 response time — fast enough for safety-critical applications
• Operating temperature -40°C to +70°C — one of the widest ranges available; suited to Alberta winters and processing facility heat
• Industry-leading 5-year warranty — lowest total cost of ownership in its class
• SIL2-capable functional safety (IEC 61508 / EN 50402) — meets rigorous safety-instrumented system requirements
• Standard 4-20mA (sink or source) and RS-485 Modbus outputs — integrates with existing control systems
• Optional HART 7 — advanced remote diagnostics and configuration
• Dirty optics warning at 75% obscuration; fault signal at 90% — proactive maintenance alerting
• Remote non-intrusive testing via fixed display, remote display (up to 3m), or local-HART — no hot work required for testing
• Multiple mounting options: wall, pipe, duct, junction box
• Multiple display options: none, fixed display, IS barrier, IS barrier with remote display
• 316L stainless steel enclosure — corrosion-resistant for sour gas and coastal environments
• IP66 rated — dust-tight and jet water resistant
• Low power consumption <5.5W; 12–30V DC operating voltage — flexible power supply compatibility